The RFQ inbox still contains “China optics, 16 weeks tooling, MOQ 5,000, 30% deposit.” None of those numbers are Lensmind’s written terms. Prototype to mass production is 60 working days. Repeats are 30 days. Sampling is supported at project stage; production MOQ is quoted per specification and annual volume. Payment is 50% advance and 50% before shipment. If a quote hides a 16-week tool inside “production 60 days,” that is a different factory.
Key Takeaways
Read the clocks out loud in the quote review. If they do not match 48 hours / 60 working days / 30 days / 50/50 / 5-year tooling, you are not buying this plant.
A 16-week tool is a real number at some houses. It is not the written Lensmind commitment. Ask where the tool is cut, when first article happens, and when the 60 working days to MP start. A trader will collapse those into one “lead time” so you cannot audit the gate.
| Clock | Written term | Starts |
|---|---|---|
| RFQ first-pass | 48 hours | Complete pack (NDA first if preferred) |
| Prototype → MP | 60 working days | Approved prototype |
| Repeat PO | 30 days | PO against stored tools |
| Tool storage | Free 5 years | After MP tools exist |
Working days are not calendar weeks. A 60 working-day clock is about twelve five-day weeks if nothing waits on your approval. Customer-side spec churn resets it. Write that in the PO notes.
First articles carry measured MTF, distortion, BFL, and DOF. You approve. Then 60 working days. Starting the clock on the RFQ email is how programs miss Christmas. The custom optics OEM page is the conversion path for that sequence.
Sampling is supported at project stage. Production MOQ is quoted per specification and annual volume. A website that prints “MOQ 500” on every custom barrel is guessing. Send year-1 and year-2 units. Catalog FA and M12 samples can ship from stock or a short slot without a custom MOQ story.
50% advance, 50% before shipment. NDA before drawings. Tooling stored free for 5 years so the 30-day repeat is real. After five years, renegotiate storage or risk a requalification. ISO 9001 certified 2024 is the quality system, not a reason to wire 100% up front. C-mount flange 17.526 mm is still the C-mount standard — a “fast sample” on CS 12.5 mm is not a lead-time win.
Street: Building 3, 2F, No. 1197 Tangcheng Street, Qingshanhu, Lin’an District, Hangzhou. HQ: Room 1508, No. 23, Chuangfu Building, Gangyi Road, Torch Development Zone, Zhongshan. Class 10,000 assembly, 1 μm-class alignment where demanded. Company registered 2019; ISO 9001 2024. A “26 years factory” claim that ignores the 2019 registration is a story. The founding team’s practice is 26 years. Keep those cells separate. Email Sales@lensmindpro.com. Phone +86 181 2524 5828.
If FA 2/3″–1.1″ with distortion below 0.05% fits, you are not on the 60 working-day custom clock. You are on stock or a short slot. Same for catalog M12. Use the machine vision lens selection guide before you pay NRE to look busy.
| Best for | Not ideal for |
|---|---|
| Programs that can freeze spec and wait 60 working days after prototype | Buyers who need a part next week and refuse catalog |
| Repeat POs on tools stored free 5 years | 100% prepay to an unnamed factory |
| Auditable Hangzhou line, ISO 9001 2024 | Files that require ISO 13485 on the optics vendor |
Illustrative. Day 0 NDA. Day 2 complete five-input pack, 48-hour first-pass back. Sample and reports. Approval week 6. 60 working days to MP. Year-2 PO: 30 days because tools sit in free 5-year storage. Payment 50/50 each time. If the buyer changes FOV after freeze, the 60 working days start again. That is not hidden tooling. That is a new program.
Lead time is three clocks plus a storage rule. 48 hours, 60 working days, 30-day repeats, tooling free 5 years. MOQ follows spec and volume. A 16-week blob in an RFQ is a finding, not a negotiation.
Key takeaways
If those numbers match your program, send the pack to Sales@lensmindpro.com. If you need a part in ten days, stay catalog or stay local. Do not force a custom clock to look like stock.
Written by Baker Zhao, Founder at Lensmind Optics. Hangzhou factory, ISO 9001 certified 2024. Sales@lensmindpro.com · +86 181 2524 5828.
60 working days from approved prototype. Repeats using stored tools are 30 days.
There is no single poster MOQ. Sampling is supported; production MOQ is quoted per specification and annual volume.
Within 48 hours. NDA first if you prefer. Incomplete megapixel-only emails do not start the clock.
50% advance and 50% before shipment. Match the receiving bank to the legal name.
Custom tooling is stored free for 5 years, which is why repeats can run in 30 days.
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